D6 Labs
™
Engineered IoT Solutions
Wh
sker
o
TM
www.d6labs.com
Page 1
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© Copyright 2026 Digital Six Laboratories, All Right Reserved
1-844-365-8647
WB1-9-xx-C2TRTRNN-0000-xx
Whisker.Block
®
, HVAC, 0-25 A AC Channel
D6 Labs Whisker-Block_3qtr-View_01
General Description
A long-range, 900 MHz, wireless sensor in a durable, transulcent
IP67 case with LED feedback, including a connected and prewired
0-25 amp external AC current transformer and two connected and
prewired 10kΩ thermistors. It also includes an internal, on-board,
thermistor with +/- 1°C accuracy. By default, readings are taken
every five minutes and battery life will last over ten years on the
included battery pack.
Power
This Whisker.Block
®
can be powered internally using a 3.7V, 5.2A-H
LiThCl battery pack (10+ years of service life) or 8-24V DC through
Connector 1 pin 1. Select variants are equipped with an internal
5V/18V sensor power supply that can provide up to 30mA to
external sensors; this is available on pin 1 on both connectors when
battery power is used and pin 1 of connector 2 when external DC
power is used.
Range
In an unobstructed, outdoor line-of-site environment, the sensor
should be able to communicate for more than
.5 miles
assuming a
receiving antenna elevation of
10 feet
. If the receiving antenna is
raised to
20 feet
or more, the range should increase to more than
1 mile
. Range performance will degrade if the internal antenna is
used; maximum range is achieved with the external antenna.
Internal Channels
This Whisker.Block
®
is configured with
two (2)
internal channels:
V
DC
Battery Voltage
Ambient Temperature
External Connections
This Whisker.Block
®
is configured with
three (3)
external channels:
4
2
3
1
Con 2 (Left)
4
2
3
1
Con 1 (Right)
Connector
Pin
Function
Description
1
1
Vin(Vout)
8-24V Input (Sensor Voltage Out)
1
2
Channel 1
C.T. Input
1
3
Channel 2
10kΩ Thermsitor
1
4
Ground
Circuit ground
2
1
Vout
Sensor Supply Voltage
2
2
Channel 3
10kΩ Thermsitor
2
3
Not used
Not used
2
4
Ground
Circuit ground
Includes HVAC Compressor sensor (current, intemp, outtemp) with 1
meter cable.
Ordering Information
Part Number
Description
WB1-9-0D-C2TRTRNN-0000-XR
25A (includes CT), 10kΩ Thermsitor (x2), 900 MHz, 8-24V Ext DC, External Antenna
WB1-9-0D-C2TRTRNN-0000-LR
25A (includes CT), 10kΩ Thermsitor (x2), 900 MHz, 8-24V Ext DC, Internal Antenna
WB1-9-00-C2TRTRNN-0000-XR
25A (includes CT), 10kΩ Thermsitor (x2), 900 MHz, Battery powered, External Antenna
WB1-9-00-C2TRTRNN-0000-LR
25A (includes CT), 10kΩ Thermsitor (x2), 900 MHz, Battery powered, Internal Antenna
Wh
sker
o
TM
www.d6labs.com
Page 2
sales@d6labs.com
© Copyright 2026 Digital Six Laboratories, All Right Reserved
1-844-365-8647
Mechanical Drawing - Whisker.Block
®
, HVAC, 0-25 A AC Channel
D6 Labs Whisker.Block Product Diagram
Product Attributes
Type
Description
Series
Whisker.io
®
Features
0-25 amp prewired external AC Current Transformer, Two External 10kΩ Thermistor
Channels, Two M8 Cable Assemblies & Internal (Onboard) Temp
Sensor Type
Current Sensor Block W/Dual Thermistors
Battery
3.7V, 5.2A-H LiSOCL
Battery Life Standard Pack
10-20 Years
DC Power
8-24V DC, 100mA max
Operating Temperature Range
-40
-
185°F
Antenna
Internal (LR) / External RPSMA (XR)
Transmission Range
1
1 mile
(typical)
Frequency Range
902-928 MHz
Internal Temperature Measurement Range
-40
-
185°F
Internal Temperature Measurement Accuracy
±
1.8°F
Sensor Sample Rate
5 Minutes(battery power) /10 Seconds(DC power)(typical)
Enclosure
Module - IP67 Case
Packaging
Box
Current Input
2
0-25 Amps AC
Analog Input Current Range
4-20 mA
Sensor Voltage supply
4.096 VDC(typical)
Sensor Supply Current
20 mA
Thermal Resistance
2
10K ohms
1) Typical range: Outdoors, external antenna, line of sight, unobstructed, antenna elevation
40 feet
.
2) Using a C.T. with a 0-5 VDC output scaled for 0-25 Amps such as our CT-SCT010T-25A (Supplied with Block)
